Starting training in MMA relatively late at the age of 25, Godbeer originally ran his own plastering business before focusing on mixed martial arts.
Following that loss, Godbeer would claim three straight victories in BAMMA, including winning the world heavyweight title against Paul Taylor on 13 June 2015.
[10] Godbeer got his first ufc win under coach Brian Martin Gallacher and the Scottish hit squad team by unanimous decision.
[11] Godbeer was expected to face Walt Harris on 7 October 2017 at UFC 216[12] before a fight-day injury to Derrick Lewis took him out of his scheduled fight with Fabricio Werdum.
[18] Godbeer was briefly scheduled to face Luis Henrique in his return to light heavyweight division on 22 September 2018 at UFC Fight Night 137.
[19] However, Godbeer pulled out of the fight in early August, citing injury, and was replaced by promotional newcomer Ryan Spann.
[21] Mark Godbeer, while retired from MMA, transitioned over to bare-knuckle boxing and entered Ken Shamrock's newly founded Valor Bare Knuckle for its debut event, VBK: 1.
[25] Mark Godbeer was set to face Josh Burns for the Police Gazette World Diamond super heavyweight belt at BYB 9 on March 12, 2022.
[27] He made his debut on June 10, 2022 against Bartłomiej Domalik for the Gromda International Openweight Championship, losing by second-round TKO.